java - 在 spring 中从 ResourceBundleMessageSource 按模式获取属性键

Question

我有将近一百个这样的属性

    NotEmpty.order.languageFrom=Field Language can't be empty
    NotEmpty.order.languageTo=Field Language can't be empty
    NotEmpty.order.description=Description field can't be empty
    NotEmpty.order.formType=FormType field can't be empty
    NotEmpty.cart.formType=FormType field can't be empty
    NotEmpty.cart.formType=FormType field can't be empty

而且我希望能够在事先不了解键的情况下获得这些属性(包括键/值)...类似于 getPropertyPair(regexp .*.order.[a-z]*=)

有人知道 spring 或 JDK 是否为此提供了一些东西吗？我想我将不得不获取 ResourceBundle 并获取所有 key 并对它们进行正则表达式...

Answer 1

我不认为你可以在 Spring 中做到这一点，但这里有一些代码可能会有所帮助:

public class Main {
  public static void main(String[] args) {
    ResourceBundle labels = ResourceBundle.getBundle("spring-regex/regex-resources", Locale.UK);
    Enumeration<String> labelKeys = labels.getKeys();

    // Build up a buffer of label keys
    StringBuffer sb = new StringBuffer();
    while (labelKeys.hasMoreElements()) {
      String key = labelKeys.nextElement();
      sb.append(key + "|");
    }

    // Choose the pattern for matching
    Pattern pattern = Pattern.compile(".*.order.[a-z]*\\|");
    Matcher matcher = pattern.matcher(sb);

    // Attempt to find all matching keys
    List<String> matchingLabelKeys = new ArrayList<String>();
    while (matcher.find()) {
      String key=matcher.group();
      matchingLabelKeys.add(key.substring(0,key.length()-1));
    }

    // Show results
    for (String value: matchingLabelKeys) {
      System.out.format("Key=%s Resource=%s",value,labels.getString(value));
    }

  }

}

这有点 hacky，但我相信您可以将它整理成更有用的东西。